Handling: hand and hoist-line implements – Hook – hoistline – or grab type – Locking device
Patent
1979-04-26
1981-01-27
Marbert, James B.
Handling: hand and hoist-line implements
Hook, hoistline, or grab type
Locking device
B64D 1738
Patent
active
042471435
ABSTRACT:
A sonobuoy having its component parts packaged within a cylindrical housing uitable for dispensing from an aircraft launcher and automatically deployable to a transponder mode in its descent through the air and water. On launching, a wind flap at one end of the housing opens to pull a lanyard attached to a drag chute retaining bag which is pulled off to release a chute. Upon water immersion, a circuit sensitive thereto energizes the sonobuoy electronics and fires a squib which releases compressed CO.sub.2 to extend an inflatable float bag to the outside of the housing. A bag retainer cap applies an outward force to a payload release mechanism jettisoning the chute and permitting the float bag to inflate, erect a flexible antenna therein, rise to the surface, also disengages the housing permitting it and components which are pulled out of the housing therein to descend freely in the water paying out a suspension and signal cable to a desired hydrophone operating depth. A sea anchor folded and stored inside the cable pack is unfolded and a hydrophone suspended at the end of the cable. The payload release mechanism more particularly includes a pair of retainer blocks, secured to the chute risers, extending into slots in the housing. A pair of overlapping, rotatable latch plates between the blocks prevent their release under drag chute loading. The release force for extending the float bag is also applied to rotate latch plates to positions permitting the blocks to disengage from the housing, jettison the drag chute, and release the housing components.
REFERENCES:
patent: 2933340 (1960-04-01), McDiarmid
patent: 3624674 (1971-11-01), Gaylord
Hansen Henry
Marbert James B.
Sciascia R. S.
The United States of America as represented by the Secretary of
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